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CVE-2020-12419 When processing callbacks that occurred during window flushing in the parent process, the associated window may die;…

Description

When processing callbacks that occurred during window flushing in the parent process, the associated window may die; causing a use-after-free condition. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

Affected products and versions

Product Affected versions Fixed in
Firefox ESR 68.10 earliest → < 68.10 68.10
Firefox 78 earliest → < 78 78
Thunderbird 68.10 earliest → < 68.10.0 68.10.0
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